bash for 循环在命令行中工作，但在脚本中失败
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bash for loop work in command line, but failed in script
提问by leon
When a run a for statement in debian bash command line, it works fine. But when I run it in a sh script or run it with bash command, it's keeping report "error near unexpected token `do'" Where is the difference?
当在 debian bash 命令行中运行 for 语句时，它工作正常。但是，当我在 sh 脚本中运行它或使用 bash 命令运行它时，它一直报告“错误接近意外令牌`do'”，区别在哪里？
[leon@www] ~/tmp $ for i in {1..10}; do echo $i; done
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[leon@www] ~/tmp $ bash for i in {1..10}; do echo $i; done
-bash: syntax error near unexpected token `do'
BTW, all works fine in centos enviorment.
顺便说一句，在centos环境中一切正常。
回答by dogbane
Use the -coption so that bash reads the commands from the string you pass in. Also, use single quotes around the command.
使用该-c选项，以便 bash 从您传入的字符串中读取命令。此外，在命令周围使用单引号。
bash -c 'for i in {1..10}; do echo $i; done'
回答by atlau
your bash command line ends with the first ;
您的 bash 命令行以第一个结尾；
so it gets executed separately as:
所以它被单独执行为：
bash for i in {1..10};
do echo $i;
done
and man bash says command argument should be a file to load: bash [options] [file]
man bash 说命令参数应该是要加载的文件：bash [options] [file]
回答by Cydonia7
You can wrap all your script inside inverted commas or in a file. Because here, you're doing bash for i in {1..10}then do echo $iand so on. You should use -c option if you don't put it in a file.
您可以将所有脚本包装在引号内或文件中。因为在这里，你在做什么，bash for i in {1..10}然后do echo $i等等。如果你不把它放在一个文件中，你应该使用 -c 选项。
